Square D Innovations
As a long-time observer and participant in the electrical trades. there is no doubt that SqD has been one of the leading innovators. They made the first receptacle GFCI and the first receptacle GFCI that did not require a surface face.extender. And the first single space breaker type GFCI. Whatever your opinion of the AFCI, SqD was in the lead in developing it and then (the part I did not like) embarked on getting it required in the NEC as a way of creating a mandatory market. It was not selling otherwise.
It was sad for me when they were acquired by a foreign company. But it has not been as bad as I feared.
A new panel, QO Plug-On Neutral Load Center, has a neutral strip that mates with the panel-specific CAFI breakers when the breaker is plugged into place. No pigtail to the neutral bar, no screws to tighten for that connection. Neat and easy.